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Finding the Fourth Proportional to 11,809,321.80, 17,682,489.90 and 11,809,321.80

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Solution

The fourth proportional to 11,809,321.80, 17,682,489.90 and 11,809,321.80 is: 17,682,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809,321.80 : 17,682,489.90 = 11,809,321.80 : x
  2. Step 2: Convert to fraction form
    11,809,321.80/17,682,489.90 = 11,809,321.80/x
  3. Step 3: Cross multiply
    11,809,321.80x = 17,682,489.90 × 11,809,321.80
  4. Step 4: Simplify right side
    11,809,321.80x = 208,818,213,454,349.81
  5. Step 5: Solve for x
    x = 208,818,213,454,349.81/11,809,321.80
  6. Step 6: Final answer
    x = 17,682,489.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.